mos.directory

Navy · RATING history

EA Engineering Aid

In 1964, Engineering Aid (EA) was combined with the BU and SW ratings at pay grade E-9 to form Master Chief Constructionman (CUCM). This E-9-only combination does not establish that EA ended at lower pay grades.

The directory also lists EA Engineering Aide. Current service use is not established for this directory entry.

Search legacy codes Browse Navy specialties

Codes named in this history

Codes without a directory match

  • CUCM stated by the source. No directory or archive record matches.

Documented history

Engineering Aid

The compilation gives 1964 as CUCM's establishment year, with no month or day. December 1969 is the compilation's revision date, not the date of the change.

Source extraction notes

Malin/BUPERS source assertion: Established 1964; combination of BU, SW, and EA ratings at pay grade E-9. Normalized as merged/included. The source explicitly limits this combination to pay grade E-9; it does not assert that lower-pay-grade use of the predecessor rating ended.

Source documents (2)

Reviewed September 23, 2026 against reference 1.

Engineering Aid

The rating history records a change to Engineering Aid in 1960, with the EA code unchanged. Because Engineering Aid is also the title given before the change, the exact title distinction is not established.

The change is dated only to 1960; no month or day is given. December 1969 is the compilation's revision date, not the date of the change.

  • No duty description is provided, so the rating title alone does not establish the work performed.
Source extraction notes

Malin/BUPERS source assertion: changed to Engineering Aid 1960. Normalized as renamed/changed.

Source documents (2)

Reviewed September 23, 2026 against references 1 and 3.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.